$\begin{array}{c} \color{#db1616}{\texttt{#MPhuoc}} \end{array}$          

`3`. are

`4`. are not

`5`. Is it

`6`. are not

`7`. are

`8`. are not

`9`. are

`10`. Is she

`11`. is

`12`. are not

`13`. is

`14`. am not

`15`. are not

`16`. is

`17`. Is she

`18`. is

`19`. are

`20`. is

`21`. are

`22`. is not

`23`. is

`-----------------------`

`@` HTĐ 

`***` Công thức V tobe 

`(+)` S + am/is/are + ... 

`(-)` S + am/is/are + not + ... 

`(?)` Am/is/are + S + ... ? 

`-----------`

`@` V tobe

`-` N(số ít) : he/she/it/... + is

`-` N(số nhiều) : we/you/they/... + are

`-` I + am